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https://issues.apache.org/jira/browse/FLINK-8094?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16533066#comment-16533066
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ASF GitHub Bot commented on FLINK-8094:
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Github user HeartSaVioR commented on the issue:
https://github.com/apache/flink/pull/6253
If we would like to answer 1 as "Yes, apply the change to ExistingField.",
we can rebase this PR with below branch.
https://github.com/HeartSaVioR/flink/commits/FLINK-8094-fixing-ExistingField
Thanks to @xccui I can copy the test code from his POC commit in above
branch.
https://github.com/xccui/flink/commit/afcc5f1a0ad92db08294199e61be5df72c1514f8
> Support other types for ExistingField rowtime extractor
> -------------------------------------------------------
>
> Key: FLINK-8094
> URL: https://issues.apache.org/jira/browse/FLINK-8094
> Project: Flink
> Issue Type: Improvement
> Components: Table API & SQL
> Affects Versions: 1.4.0, 1.5.0
> Reporter: Xingcan Cui
> Priority: Major
> Labels: pull-request-available
>
> Currently, the {{ExistingField}} rowtime extractor only supports {{Long}} and
> {{Timestamp}} fields. To enable other data types (e.g., {{String}}), we can
> provide some system extraction functions and allow users to pass some
> parameters via the constructor of {{ExistingField}}. There's [a simple
> demo|https://github.com/xccui/flink/commit/afcc5f1a0ad92db08294199e61be5df72c1514f8]
> which enables the {{String}} type rowtime by adding a UDF {{str2EventTime}}.
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